The generic status of Microsandalus Stål, 1867 stat. rev. is discussed and formally revalidated. The type species of this genus, M. umbrosus Stål, 1867, is redescribed and illustrated with an emphasis on sexual dimorphism. The lectotype of M. umbrosus is designated. Pirates sobrius Walker, 1873 is found to be the brachypterous female of M. umbrosus, and therefore, a previous synonymy, which had recently gone unnoticed, is confirmed. A key to help separate peiratine genera distributed in Australia is provided.

中文翻译：

---

澳大拉西亚属 Microsandalus Stål stat 的重新验证。rev., 重新描述 M. umbrosus Stål (半翅目: Reduviidae)

Microsandalus Stål的一般状态，1867 年统计。转。讨论并正式重新验证。该属的模式种M. umbrosus Stål, 1867, 被重新描述和说明，重点是两性异形。指定了M. umbrosus的选型。Pirates sobrius Walker, 1873 被发现是M. umbrosus的短翅雌性，因此，最近被忽视的先前同义词得到证实。提供了帮助分离分布在澳大利亚的 peiratine 属的密钥。